Ensure you can use child_nodes on all nodes

Author: kddnewton

lib/syntax_tree.rb

@@ -3968,6 +3968,10 @@ def comments
       []
     end
 
+    def child_nodes
+      []
+    end
+
     def format(q)
       q.text(value)
     end
@@ -12976,6 +12980,10 @@ def initialize(location:, comments: [])
       @comments = comments
     end
 
+    def child_nodes
+      []
+    end
+
     def format(q)
     end